﻿
/*
 SharpContent
 Copyright (c) 2002-2009, State of Montana
 Redistribution and use in source and binary forms, with or without modification,
 are permitted provided that the following conditions are met:
 1. Redistributions of source code must retain the above copyright notice,
 this list of conditions and the following disclaimer.
 2. Redistributions in binary form must reproduce the above copyright notice,
 this list of conditions and the following disclaimer in the documentation
 and/or other materials provided with the distribution.
 3. Neither the State of Montana nor the names of contributors may be used to endorse
 or promote products derived from this software without specific prior
 written permission.
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 DAMAGE.
 */
// Cross browser compatability stuff

if (!Array.prototype.reduce) {
    Array.prototype.reduce = function(fun /*, initial*/){
        var len = this.length >>> 0;
        if (typeof fun != "function") 
            throw new TypeError();
        
        // no value to return if no initial value and an empty array
        if (len == 0 && arguments.length == 1) 
            throw new TypeError();
        
        var i = 0;
        if (arguments.length >= 2) {
            var rv = arguments[1];
        }
        else {
            do {
                if (i in this) {
                    rv = this[i++];
                    break;
                }
                
                // if array contains no values, no initial value to return
                if (++i >= len) 
                    throw new TypeError();
            }
            while (true);
        }
        
        for (; i < len; i++) {
            if (i in this) 
                rv = fun.call(null, rv, this[i], i, this);
        }
        
        return rv;
    };
}